Abstract: On the premise of the same raw material properties, process and main operation parameters, the comparison of the pilot plant results of delayed coking experiment with that of the typical industrial device are conducted. Although the inner diameter of the pilot plant coking furnace tube is 6 mm, significantly smaller than that of the industrial device (id=107 mm), the length/ diameter ratio of 3 833 is close to the industrial device 3 759, the pilot plant can operate normally like industrial unit, the furnace outlet temperature of pilot can reach 500 ℃. Feed conversion and gasification rate at the outlet of the coking furnace of the pilot are 6.1% and 22.4%, respectively, slightly less than the industrial unit 7.8% and 26.33%. The height/diameter ratio of pilot plant coking tower reaches 6(oil gas flow rate of 0.009 46 m/s in coking tower), more than the industrial device 4.12(oil and gas flow rate of 0.098 20 m/s in industrial device), but it is still in the recommended range of industrial design requirements (≯0.15 m/s). The test results which 3 kinds of different materials and 3 different circulation ratios show that the pilot plant product distribution and their main properties are very close to the industrial device results.